Fuel supply control device
AssigneeIHI Corporation
InventorsNaoki SEKI, Yasuhiko YAMAMOTO, Akihiro SHIMAMURA
Life of this patent
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Abstract
A fuel supply control device is provided in which a parallel flow path of an orifice and a pressurizing valve is used as a complex pressurizing valve for a fuel supply amount, and which controls a fuel supply pump on the basis of a pressure difference before and after the complex pressurizing valve that has been detected by a pressure difference meter. When the rotational speed of the fuel supply pump is below a predetermined threshold value, the fuel supply pump is controlled on the basis of a first fuel measurement amount, and the fuel supply pump is controlled on the basis of a second fuel measurement amount.
Claims5
A fuel supply control device in which a parallel flow path of an orifice and a pressurizing valve is used as a complex pressurizing valve for a fuel supply amount and a fuel supply pump is controlled on the basis of a differential pressure before and after the complex pressurizing valve detected by a differential pressure meter,
- wherein the fuel supply pump is configured to be controlled on the basis of a first fuel measurement amount obtained from the differential pressure before and after the complex pressurizing valve and a mutual relationship between the differential pressure before and after the complex pressurizing valve and a fuel flow rate when a rotational speed of the fuel supply pump is below a predetermined threshold value, and
- the fuel supply pump is configured to be controlled on the basis of a second fuel measurement amount obtained from a pump volume efficiency in consideration of an internal leak area of the fuel supply pump and a theoretical pump discharge volume when the rotational speed exceeds the predetermined threshold value.
Dependencies are inferred from the claim text.